; total time: 0.11
; plan length: 13
(fly plane1 city2 city0 fl5 fl4)
(refuel plane2 city2 fl0 fl1)
(fly plane2 city2 city1 fl1 fl0)
(board person2 plane2 city1)
(refuel plane2 city1 fl0 fl1)
(fly plane2 city1 city2 fl1 fl0)
(debark person2 plane2 city2)
(refuel plane2 city2 fl0 fl1)
(fly plane2 city2 city0 fl1 fl0)
(board person4 plane2 city0)
(refuel plane2 city0 fl0 fl1)
(fly plane2 city0 city1 fl1 fl0)
(debark person4 plane2 city1)
